General C++ Programming - March 2011

by Smitty
What am I missing?
 
By the way stdDevFns.h is a header file that I created. #include <iostream> #include <fstream> #include <cmath> #include "stdDevFns.h" using namespace...
[2 replies] Last: you are also missing a - main() - (by closed account zwA4jE8b)
by closed account Lv0f92yv
Sending input to external device
 
I have two laptops, running linux. Each laptop supports at most 2 outputs (onboard monitor plus one external). I would like to use one of the laptops as a third...
[no replies]
by smcguffee
Saving Classes
 
Hi, I'm wondering if there is an automated way to write instances of classes to a disk and read instances of classes from a disk. Does something like sizeof(in...
[5 replies] Last: There is no automated way. However, there is a methodology to this. Go... (by Duthomhas)
by badger
how to interpret string characters for if function (unit converter).
 
Hi, I'm really quite new to C++ but I'm trying to code a unit converter for a class assignment. I'm stuck on trying to read an empty space before a character w...
[2 replies] Last: Apologies, tags have now been added. There isn't a space in the strin... (by badger)
by student 123
how do read the 1st line in text file?
 
Hi, Can someone tell me how do we read the first line in a text file? As far as I know,the code below will read the number of line that are present in th...
[8 replies] Last: I suggest the C++ Primer: http://www.amazon.com/Primer-4th-Stanley-B-L... (by Athar)
by scopolamine
time counter problem
 
i want to design a clock in cpp. i'm a beginner. so far i did this, but it can't compile. does anyone else help me to get over the compile error? * sorry for...
[no replies]
by closed account Lv0f92yv
SFML linking problem
 
I am trying to follow the tutorial on SFML's site and am having an issue when running the executable. I have 'sudo make install'd the lib, and am using the foll...
[11 replies] Last: @ darkestfright : I understand why you would say that, this was just ... (by Computergeek01)
by lmfaomanwtf
problem number 1
 
well err?.. i don't like to ask for help with homeworks but i really don't know how to solve this problem.. At the new year's eve concert the first 2 rows ar...
[no replies]
by tauqeer
How will the behaviour of multibyte char differ because of different LC_CTYPE locale
 
I am comparing two multibyte characters in two different platforms having different LC_CTYPE variables, they are returning different values. One of the varia...
[3 replies] Last: From the man page: NOTES The behavior of mbrlen() depends on t... (by PanGalactic)
by zizo1989
data structure , doubly linked list . probelm
 
hi every one, sorry if I write this topic in wrong section :'( I have a problem with this code I dont know why is not compiling or show result !! this is ...
[3 replies] Last: Try this one. I think it will work (untested though): void DLL::spec... (by closed account D80DSL3A)
by TheDestroyer
File mapping error
 
I'm trying to map a file to memory using mmap function, but whenever I set an offset I get an error!! I tried to google it but no use! could you guys help me wi...
[1 reply] : I found the solution. The offset has to be multiples of the system pag... (by TheDestroyer)
by Nay
Using cygwin, dev C++ and unix header files-- please help
 
Hello... I am really in desperate situation. I am a dev C++ programmer. I have never done programming in Unix or with cygwin before. Now I have to use C++ heade...
[1 reply] : I believe that you can use "\\" to use the forward slash in an include... (by ModShop)
by mincuu
how do I 'find' and 'delete' texts from a text file??
 
i have this assignment to submit tomorrow(friday) and i am having difficulties updating my text files. actually, i have to be able to update the text files by s...
[no replies]
by danroc01
Dynamic aspect to string in C++
 
Hi Guys, Im an automation engineer, first time attempt at a C++ app. Im writing an app that connects with manufacturing software, reads tag data from a PLC, ...
[no replies]
by jmambwere
Test Question.
 
Using C++ Create a program that enables the creation of student objects. The objects should contain two data members that store values for student name and fee...
[2 replies] Last: No need to apologise, i understand. Thanks for pointing & showing me t... (by jmambwere)
by mnewby1
OpenGL-Random Walk Program
 
I'm writing a program for my C++ class. Here's the description: Random Walk Random walk simulates how a molecule moves in a liquid or how a drunk person st...
[2 replies] Last: lol nah jk. its Dan (by CSAS)
by zixuandeneidan
Something about iterator base class in STL
 
I browsed one of the pages in the reference column and find the definition of base_iterator class template like following: template <class Category, class T, c...
[1 reply] : See http://cplusplus.com/reference/clibrary/cstddef/ptrdiff_t/ As fo... (by firedraco)
by rocketboy9000
Found something weird in old code.
 
In some of my old code, I found a function for converting unsigned integers to roman numerals. It contains some rather ... unorthodox control flow. const char...
[1 reply] : I think it is legal. Case 4 doesn't have a break statement, meaning i... (by webJose)
by skyeler
sha256 encryption
 
i have a sha256 encryption for passwords on my game and i found that i cant make a password recovery option on my games site that uses email and account name ca...
[2 replies] Last: I would avoid the trouble of storing the password using reversible enc... (by webJose)
by rjmckinley
How can I add input to a string array?
 
How do I add to a list of existing values, in the input stream, to a string array?
[1 reply] : you can use getline function in C++ <string> header file: the function... (by zixuandeneidan)
March 2011 Pages: 123... 31
  Archived months: [feb2011] [apr2011]

This is an archived page. To post a new message, go to the current page.